/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.tn.exam.shiro;

import java.io.Serializable;


import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;

public class ShiroDbRealm extends AuthorizingRealm {

	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(
			PrincipalCollection principals) {
		return null;
	}

	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(
			AuthenticationToken token) throws AuthenticationException {
		return null;
	}

//	protected AccountService accountService;
//
//	/**
//	 * 认证回调函数,登录时调用.
//	 */
//	@Override
//	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException {
//		UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
//		User user = accountService.findUserByLoginName(token.getUsername());
//		if (user != null) {
//			byte[] salt = Encodes.decodeHex(user.getSalt());
//			return new SimpleAuthenticationInfo(new ShiroUser(user.getId(), user.getLoginName(), user.getName()),
//					user.getPassword(), ByteSource.Util.bytes(salt), getName());
//		} else {
//			return null;
//		}
//	}
//
//	/**
//	 * 授权查询回调函数, 进行鉴权但缓存中无用户的授权信息时调用.
//	 * 本用例不演示授权校验，因此直接返回Null.
//	 */
//	@Override
//	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
//		return null;
//	}
//
//	/**
//	 * 设定Password校验的Hash算法与迭代次数.
//	 */
//	@PostConstruct
//	public void initCredentialsMatcher() {
//		HashedCredentialsMatcher matcher = new HashedCredentialsMatcher(AccountService.HASH_ALGORITHM);
//		matcher.setHashIterations(AccountService.HASH_INTERATIONS);
//
//		setCredentialsMatcher(matcher);
//	}
//
//	@Autowired
//	public void setAccountService(AccountService accountService) {
//		this.accountService = accountService;
//	}
//
//	/**
//	 * 自定义Authentication对象，使得Subject除了携带用户的登录名外还可以携带更多信息.
//	 */
//	public static class ShiroUser implements Serializable {
//		private static final long serialVersionUID = -1373760761780840081L;
//		public Long id;
//		public String loginName;
//		public String name;
//
//		public ShiroUser(Long id, String loginName, String name) {
//			this.id = id;
//			this.loginName = loginName;
//			this.name = name;
//		}
//
//		public String getName() {
//			return name;
//		}
//
//		/**
//		 * 本函数输出将作为默认的<shiro:principal/>输出.
//		 */
//		@Override
//		public String toString() {
//			return loginName;
//		}
//
//		/**
//		 * 重载equals,只计算loginName;
//		 */
//		@Override
//		public int hashCode() {
//			return HashCodeBuilder.reflectionHashCode(this, "loginName");
//		}
//
//		/**
//		 * 重载equals,只比较loginName
//		 */
//		@Override
//		public boolean equals(Object obj) {
//			return EqualsBuilder.reflectionEquals(this, obj, "loginName");
//		}
//	}
}
